Tube cutting and flaring machine



March 1932. J. w RDO TUBE CUTTING AND FLARING MACHINE Filed June 11,1930 rllll illlilllll- /NVENTO/?. /OHN W GORDON.

March 29, 1932. J. w. GORDON,

TUBE; CUTT ING AND FLARING MACHINE Filed June 11, 1930 2 Sheets-Sheet 2/N VE N TOR. JOHN W GORDON.

ATTORNEY.

Y 'J o HNtw. GORDON, or. DAYTON,

' g drelin elevation; Fig. 41: isa I '30 end of; the mandrel toshow thetrimming cutl beea lled mean end, v

ing portion or standard '12 provided nearrits Patented Mar. '29, 1932 aoHmQAssIeNoR' 1 THE GORDON-DUNNAM 'TURINGMGQMPANY; or DAYTON; 01110, nconrone'rlon or"onto,

f from 0mm AND r Rnve MACHINE I Application filed June 11,

' "This invention relates to a tube'cutting and flaring machine, and oneobject of the inven tionis' to'providea simple efiicient machine to cutor trim the ends of tubes and to flare thesame. j a

' AQfurther object of the invention is to pro-j vide such a machinehaving cutting and flari ing instrumentalltles arranged to actsuccessively upon a tube and of suchajcharacter s thatthe machine may beeasily and operatedfto complete the operation. V

' A furtherobjectof the'invention' is to pro-' vide such a machinewithva flaring device which will impart to the end of the tube a Ismooth uniform flare freefrom burrs or rough Afurther' object of theinvention is to -pro-' vide such a machine with a cutter which will Isever atube of'thin-flexiblemetal such as COP-1 0pervwithoutcrushing'thesame. v 1

Other objects of the invention will appeari i k y as the mechanism; isdescribed indetail.

fIn the accompanying drawings F igyl'is a top plan View of a machine'embodying my invention; Fig.2'i's a rear end elevation, part9 lyfinsection; Fig. 3 visasectional detail'view of the mandrel supportinmember, taken on: 'thelin'e3 3 of Fig;1' and showing the mandetail'viewof one ter ;'and Fig. 5 is a sectional view of the flared end ofthetube. V p s l In these drawings; '1 have illustrated one mbodiment ofmy'invention, but'it will be i 'understoodthat this particular embodimenthas been chosen for the purposes 'ofillus'trae tion only and that theinvention may take I various form without" departingfrom' they 7'spirit-oftheinvention! r Inthatembodiment her illustrated the 1113-chineicornprises a supporting structure or base 10 whichjasheretshowmjis mounted upon legs 11. f Tliis basehas at one end, whichmayv an upwardly extendupper end with means forisupporting thetube-which s ing member 1 ing member 13,

." engage-rand? flare the end .vided. with ap rotation and; extendslengthwiseiof the. tubej The-glu'g is located V I to'be cut andflared:Prefer-f ably-thetubsupporting means: is in the m Qturefof'aclamp and ashere shown a clampl 3 isyhinged to th e 'upper endof 1939, serial No.146 0,519. Q

the clamping memberand standard are re; 'cessed to receive the tube. Inthe'preSentinj stance, a two-part bushing '14 has its parts mountedrespectively inthe upper'end of the standard and the clamping member,and the two parts of this bushing are provided with alined recesses'to'rece'ive the tube. Q The bu'shing being readily" removable itis'obvious that substitutingone bushing for another, va-

the clamping device. The clamping member the standard 12 and theadjacent surfaces of v 6'0" rloussi'z'es of tubes maybe supportedwithin" may be secured inits closed positloninf any suitable manner but,as here shown, a link 15 l is pivotally connected with the "standard, 12

and hasat its upper end a cam or eecentriclfi 1 arranged to engage overlugs 17 on the clampthe c am being an operating-handle 18'. 1 f YMounted, upon the supporting structure or ase "10 is a frame which ismovable trans provide'dwith versely to a tube mounted in the tubesupport or clamp. This frame carries a rota-r7 cutter and a: mandrel somovement of the frame will bring these two arranged that flit-1 j 4devices successively into operative relation tothe;tube.".Themandrel ismounted fora bothirotator movement and for ment and afterthe end offthetube has been" severedthe mandrel ismoved into Iinethere-J withand-forced inwardly, While rotating; to p of the tubeQYThe: frame maytake various forms and may; be mounted in any suitable mannerl presentmechanism the ,base10has upwardly: extending' brackets or lugs 19 and20' pro ertures in which is mounted @a shaft 21, which "is preferably.fixed against;

on the tube support; in line with 'butspace V d inwardly from' thestandard 12. The 'fr portedion the shaftf2lgi'the framefmember23"In'thei '8 being: lo,cated between the l'ug Q O andiithe standard 12.;Each? frame memberi ispro' vided in the upper portion thereof and nearits, l'ateral'edges with bearings 24 and 25; the

axial moveola amecomprises ta mar-" member 22' and a front member 23rigidly fconnected one tothe other andpivotallyfsup- 1 5} 7corresponding. bearings in the two {frame; 00

members being arranged in alinement. In the present construction theframe members are cut away between the two bearings so that in efiectthe bearings of each frame member are carried by diverging arms.Itotatably mounted in the alined bearings 24 of the twoframe members isa shaft 26 one end of which projects beyond the front frame member 24and has rigidly secured thereto a cutter 27, which is preferably in thenature.

of a rotatable disk. This cutter is. so arranged with relation the frameis moved transversely to the standard the cutter will clear the adjacentend of the boss 14 form-' ing art of the tube support, and if there is atu supported in and projecting beyond said boss the end of the tube willbe engaged by the cutter and severed. The cutter is rotatedat a veryhigh-speed and will sever 28 which is held against the end of asoftmetaltube without crushing or distorting the same. Rotatably mountedin the bearings 25 of the two frame members is a tubular member axialmovement by collars 29 secured thereto and abutting against therespective bearings. Slidably mounted within the tubular member 28 is amandrel 30 which isso connected with the tubularmember that it willrotate therewith. In the arrangement here shown a pin 31 extends throughthe mandrel and has its ends projecting into slots 32 formed in thetubular member. A spring. 33 retains the mandrel normally in itsretracted position. As here shown, the rear portion ofthe bore of thetubular member is enlarged. as shown at 34, to receive the spring 33. Acollar 35 secured to the mandrel adjacent to the pin 31 Y fits withinthe enlarged portion ofthe tubular member and maintains the mandrel inaxial alinement with the tubular member. The spring 33 is confinedbetween the collar I 35 and the shoulder at the forward end of-the wardend of the mandrel, 50

1 enlarged portion of the bore. The mandrel is provided near its forwardend with a ta ed portion 36 to engage the end of the tu e and flare thesame. Preferably the forin advance of the is of reduced diameter, isadapted to enter the center the mandrel with forward end of thisretapered portion 36, as shown at 37,: and tube and accurately relationthereto, the

duced portion being rounded, as shown at 38,

to facilitate its entrance intov the tube. When themandrel has beenmoved intoline with the tube, and while the tubular member and mandrelare rotating, ated to causethe tapered portion thereof to engage the endof the tube and thus flare the-same outwardly. Y The tapered portion ofthe mandrel may directly engage the end I of the tube, ifdesired, but Ifind that a more satisfactory operation is had if the tapered p0 'onof-thetube is provided with two orv to the frame and the standard 12that when the mandrel is actu more rollers 39 which engage the tube androll the end thereof outwardly.

The operation of the cutter sometimes leaves a burr or rough edge on theend of the tube and the mandrel is provided with means for removing thisburr and leaving the flared end of the tube with a smooth clean edge.

For this purpose I have secured to the man'- drel a stationary cutter 40which overlaps the tapered portion. to engage the outer edge of the.fiared end of the tube and shave off any burr or roughness which may beon this edge. The reduced portion 37 of the mandrel is slotted, as shownat 41, and a blade or cutter 42 is pivotally mounted within the slot andthe rear end thereof is forced .outwardl by a spring43; When the end ofthe man el is inserted in the tube the blade 42 will be forced inwardlybut the action of the sprin will press the same against the innersurface ofth'e'tube and asthe mandrel is revolving at a relatively highspeed this blade will remove any burr or roughness on the inner end ofthe tube before the latter comes in contact with the tapered portion ofthe mandrel. Longitudi nal movement may be imparted to the man'- drel inany suitab e manner but, in the present instance, an operating handle orlever 44.

is pivotally mounted at one end on. afixe support 45 carried by thepivoted frame and is connected by a link 46 with the rear end of themandrel, the pivotal connections preferably of the ball and socket type.The

frame may be swung from one position to the other in any desired mannerbut preferably is provided withahandle 60 for this purpose.

The cutter 27 and the-mandrel are driven from the motor andthis motor ispreferably carried by the swinging frame. purpose the frame member 22has a down.- wardly extending portion 47 provided at its lower end witha base 48 on which is mounted a motor 49, the shaft 50 of which hassecured thereto. a grooved pulley .51. Grooved pulleys 52 and 53 aresecuredrespectively to the cutter shaft 26 and to the tubular member-28which carries the mandrel. Abelt 54 extends about the pulleys 51, 52 and53.v In the arrangement here shown that portion of the.

beltbetween the pulleys 52and 53 is looped downwardl toward the motorand passed about an id e pulley 55 on the shaft-21, thus causing largerportions of the belt to operatively engage the two driven pulleys thanwould be the case if the belt extended straight across the space betweenthe driven ulleys.

In the operationof the mechanism he tube is first mountedin the tubesupport and the frame is then swung to the left, in Fig. 2, to causethecutter to sever the end of the tube. After the end of the tube trimmedthe frame is swung in the opposite direction to bring the mandrel intoalinement the mandrel is'then pressed with. the tube and hereof and. isadapted being,

For this has been severed or forwardly the lever 44 and thus caused toengage andflarelthe tube; after which the handle is released and themandrel is, withe drawnrbyzthe spring The swinging frame is'heldnormally in an intermediateor inoperative position: by Ineansz of aspringpressed plunger 56"m'ounted in the frame I -member, 22: andadapted to enter the recess 57 r frame toimovevsaidcutter andisaidmandrel" 0n the baselO. This s to correctly positionythe mandrel withrelation tothe tubeand in the upwardlyextending bracket or lug 19plunger'is also adapted V retain the same in that position "duringtlieflaring. operation. .To

this'end therlug 19 is provided with a second recess "58 to receive theplunger when the 'mandrel is-in alinement with the tube. a

, The

plunger maybe voperated in any desired manner, but it is here shown asprovided with, a

head 59hbytracted'against the'action of its spring,

fWhi le I haveishown and described one embodiment of my invention I wishit tobeun derstood'that I do not desire to be limited to the detailsthereof as various modifications may occur to a person skilled'injthe'art.

Having'now fully described my invention',

whatI claim as new anddesire' to secure by Letters Patent is 1 1. Inatube cutting and flaring machine,j

a support for the tube, a rotatable cutter mounted-for bodily movementinto engage-- ment with a tube on said support, a mandrel mountedforboth 'rotaryand axialmovement M Jand havinga part to 'engage and flaresaid tube, means for, moving said mandrel into I alinementwith said tubeandimp'arting axial movement I thereto, and means i for rotating saidcutter :and'said mandrel; s V

2. Inlatube cutting and flaring machine,-

a support for the tube, a frame mounted for movement transversely to thetube on said support, a cutter rotatably mounted on said 1 frame, amandrel mountedonisaidlframe for 1 fbothrro'tary and'a xialmovementwithrela tion thereto and havinga part to engagerand flaresaid-tube, means for actuating-said successively into.operativelrelation to said tube and. for imparting .zaxial movement tosaid mandrel, andwmeans for rotating said cutter andsaidmandrel. Y 3.'Ina tube cuttingand flaring machine, a'support for} the tube, aframemounted for; V p Y movement transversely to the tubeon said wassupport, 7 a cutter rotatablyymount'ed on said frame, aamandrelmountedonl said frame for "both rotary .and axial; movement with relationthereto and having apart to'engage V and flare said tube, ,ineans foractuating said 30" I successivelyfintoframe to move saidcutter andsaidniandrel' ;j operative; relation to ;said tube and for impartingaxial movementto, said mandrel, and meansqcarried by said frame forrotating, 1: said cutter and, said mandrel; g r

meansof'which it"may be re-v i In a tube'ri cutting andxflaring machine,

a support for the tube, a framemountedfor movement" transversely to thetube on said a 'supp'ort,.a v'cutter'rotatably mounted on said "7'frame, a tubular member rotatably mounted on saidiframepa mandrelmounted in said tubular. member for rotationtherewith and 1 p for" axialmovement lwithr elation thereto and having part of said tube, means forimparting axial move-- ment to said mandrel, and means for rotating'said tubular member and'said cutters c In a tube cutting and flaringmachine,

asupport forthetube, a frame mounted'for frame for movement therewithand driving connections between said motor and said shaft and"said-tubulargniember.-' 6. In a tube cutting and a supportfor thetube,I mounted for movement about an axis extendi'n'gs lengthwise of. thetube on. said support,

lacutter carried byrsaid shaft," a 'tu-n member rotatably mounted-onsaid .1

a mandrel mounted in said tubular 'axialmovement, to said mandrel, amotormounted on said flaring machine, a frame pivotally aic'utterrotatably mounted onsaid frame, a Q

mandrel arotatably and slidably, mounted on said frame, spacedfromsa'idcutterand having a part to engageand -flare the end of saidvment to said.mandrehandmeans renown,

in said cutter-andsaid mandrel.

' tube, means for imparting longitudinalmoveg 7. 1m a-tube cuttingandflaring machine,

a Supporting structure having. apart forming a support for atube,aframe'pivotally mountspaoed bearings arranged normally on the oppositesides of saidtube support; a shaft journaled' in, one rof said bearings,a cutter rigidlysecured to said shaft and arranged togbe moved intoengagement with a tubeiin ed on said supporting structure and having looits

said; support 'fwhenfsaidframe is moved in one direction, a mandrelsupporting device" rotatably mounted in the other bearing of said frame,a mandrel 'mountedinsaid movement with relation thereto, said mandrelbeing: so arranged that it willjbevbrought into line with: said tube-When said frame is movedinthe'other direction, means for; g movement tosaid mandrel, and meansifor rotating said shaft imparting longitudinaland said mandrel supporting device;

a supportingstructurehaving a part forming ed on said support r devicefor rotation therewith and Y for longitudinal a support for a tubeyaframe pivotally-mouht 8.-In' a tube cutting w'and fla'ring machinei Ving structure and having v I spaced bearings: arranged; normally .onthe:

I opposite sides of said tube s upport, ajsha' ft" 3 a 5 one direction,

' mandrel being so ing device rotatably tatably mounted bekaw the, axisthereof, a motor supported on said part, and driving connections betweenSRidrIDOtOl and said shaft and said mandrel supporting device.

9. In a tube cutting and flaring machine,

a a supporting structure having a part forming a support for a tube, aframe pivotally mounted on said supportingstructure and having spacedbearings arran ed. normally onthe opposite sides of said tu support, a

shaft journaled in one of said bearings, a

cutter rigidly secured to said shaft and arranged to bemovedintowengagement with the tube? in said support; when said frame is movedin one direction, amandrel supportmounted" in the other bearing of saidframe, a mandrel mounted in said device for rotation therewith and forlongitudinal movementwith relation there-. to, said mandrel being soarranged that it in will be brought into line with said tube when saidframe is moved in the other direction, means for impartinglongitudinalmovement to said mandrel, and means for rotating said shaft;and said mandrel supporting device,

and a locking device to retain said frame in a position to which it hasbeen moved.

10. In a machine of the character de a frame mountseribed, a-support fora tube,

to a tube on ed for movement transversely Ag said'support, a mandrelmounted on said frame for both rotary and axial movement withrelationthereto, said mandrel having a tapered part to enter the end ofsaid tube,

rollers mounted in said tapered part Qfsaid m mandrel to engage saidtube and flare the same, and means forrotating said mandrel and forimparting axial movement thereto.

11. In a machine of the character described, a frame, a supportingmember roon said frame, a mandrel mounted in said supporting member forrotation therewith and for lengthwise movement with relation thereto,said mandrel having apart to engage and flare the end y of a tube, meansfor rotatingsaid supporting.

'member, and means for imparting lengthwise movement tosaid mandrel.

12. In a-machine of. the character described, 21, frame a supportingmember rotatahly: mounted on said frame,

a mandrel mounted in said supporting member for retation therewith andfor lengthwise movement with relation thereto, said mandrel haw ing a.partto engage andfiare the end of a tube, means for rotating said supber, manually actuated means or impartin lengthwise movement to saidmandrel, and yieldable means to return said mandrel to its initialposition.

' 13. In a machine of the character described, 21. frame, a tubularmember rotatably mounted. on said frameand having means wherebyit may berotated, a mandrel mounted in s'aidtubular member for rotation therewithand for axial movement with relation thereto, said mandrel having a partto enter the end of, a tube and flare the same, a sprin to hold saidmandrel normally in a retracte position, and means for moving saidmandrel against the action of said spring while aid mandrel rotates withsaid tubular memr. I 14. In a machine of the character described, aframe, a supporting member rotatably mounted on said frame, a mandrelmounted in said supporting member for rotation therewith and forlengthwise movement with relation thereto, having a part to engage andflare the end of a tube, means for rotating said supporting member,means for imparting lengthwise movement to said mandrel, and meanscarried by said mandrel for trimming the edge of the end of the-tube.

'15. In a machine of the character described, a support for a tube, aframe mounted for movement transverse to a tube on said support, amandrel mounted on said frame for both axial and rotating movement andhaving a part to engage and flare the end of said tube, and means forrotating said mandrel and for imparting axial movement thereto;

16. In a i machine of the character described, asupport for a tube, aframe mountortingmema said mandrel ed for movement transverse to a tubeon said I support, a mandrel mounted on said frame for both axial androtating movement and having a part toengage and flare the end of saidtube, means for rotating said mandrel, and manually operated means forimparting axial movement tosaidmandrel.

17'. In a machine of the character described, asupport for a. tube, aframe mounted for movement transverse to a tube on said support, asupporting member rotatably mounted on said frame, a mandrel mounted insaid supporting member for rotation therewith and for lengthwisemovement with relation thereto, said mandrel having a part to engage andflare the end of atube, means for rotating said supporting member, andmeans for imparting lengthwise movement to said mandrel.

18. In a machine of the character described, a support for a tube, asupport for a mandrel, one of said supports beingmovable transversely toa tube on said support to bring the tube and mandrel into 'ali'nement, amandrel mounted on said framefor both axial and rotating movement andhavinga part to engage and flare'the end of said tube, and means forrotating said'man'drel and for, imparting axial movement thereto.

19. In a mechanism. of the character d e- I scribed, arotatablesupporting structure, a

scribed, a rotatable supporting structure, a mandrel mounted in saidstructure for rotation therewith and for longitudinal move ment withrelation thereto, said mandrel v having a reduced end portion to enter atube and a tapered portion to flare the end of said tube, and means forrotating-said supporting structure. I 4

20. In a mechanism of the character demandrel mounted in said structurefor rota-' I tion therewith and 'for'longitudinal movev ment withrelation thereto, said mandrel having a tapered portion to enter the endof a tube and flare'the same, and means for rotating said'supportingstructure, said mandrel also havinga part-extending beyond saidsupporting structure whereby longitudinal movement maybe imparted tosaid man- 7 drel while itrotates.

21. In a mechanism of thecharaoter described, a tube supporting device,a rotatable structure having an axial bore] in line with said tubesupporting device',fa mandrel mounted inisaid bore'for longitudinalmovement and held'against rotation with relation to said structure,saidmandrel having altapered portion'to enter the end of a tube in saidsupporting device and flare the same, a g and means for rotating saidstructure.

In testimony whereof, I aflix my signature hereto.v V v I J GORDON

